docs: chat swap — chat.inference.coop is LibreChat; Open WebUI legacy at chat-legacy; getting-started chat section rewritten for LibreChat

infrastructure.md

@@ -5,20 +5,20 @@ and contributors who want to work on it.
 
 ## The big picture
 
-Members reach the co-op through two front doors: the **chat** (Open WebUI) and
+Members reach the co-op through two front doors: the **chat** (LibreChat) and
 the **API** (the LiteLLM gateway). Both route through a single gateway to
 multiple LLM providers — so members choose what they value for each task:
 architecturally private inference in **TEE-protected enclaves** (Tinfoil),
-100% renewable energy (GreenPT), or publicly developed sovereign models
-(PublicAI). A thin layer of custom middleware — the member portal — ties Open
+100% renewable energy (GreenPT, Regolo). A thin layer of custom middleware —
+the member portal — ties Open
 Collective membership to Cloudron accounts and LiteLLM keys.
 
 ```
                                               ┌─> Tinfoil (TEE)      🔒 private
-Members ──> Open WebUI (chat) ─┐              │
+Members ──> LibreChat (chat) ──┐              │
                                ├──> LiteLLM ──┼─> GreenPT (renewable) 🌱 green
 Members ──> your own tools ────┘    gateway   │
-                          (API)     (keys,    └─> PublicAI (open)     📖 public
+                          (API)     (keys,    └─> Regolo (renewable)  🌱 green
                                     metering,
                                     routing)
 ```
@@ -30,7 +30,8 @@ single sign-on, and per-app isolation.
 
 | Component | Purpose | URL | Code |
 |-----------|---------|-----|------|
-| **Open WebUI** | Member-facing chat (web search, file uploads) | chat.inference.coop | — |
+| **LibreChat** | Member-facing chat (models, web search, image generation, voice) | chat.inference.coop | [co-op/librechat-custom](https://git.inference.coop/co-op/librechat-custom) |
+| **Open WebUI** | Legacy chat instance — read-only reference (old history + file attachments) | chat-legacy.inference.coop | — |
 | **LiteLLM** | AI gateway — keys, metering, model routing | gateway.inference.coop | [code/litellm](https://git.inference.coop/code/litellm) |
 | **Member Portal** | Membership middleware — onboarding, key provisioning, Loomio sync | portal.inference.coop | [code/member-portal](https://git.inference.coop/code/member-portal) |
 | **Member Dashboard** | Member-facing usage view + API key management | dashboard.inference.coop | [code/member-dashboard](https://git.inference.coop/code/member-dashboard) |